Today in Tech: Yahoo sells Delicious, Square gets Visa by JP Mangalindan @FortuneMagazine April 28, 2011, 10:05 AM EDT E-mail Tweet Facebook Google Plus Linkedin Share icons A curated selection of the day’s most newsworthy tech stories from all over the Web. Sign up to get the newsletter delivered to you everyday. “Apple has never done so and has no plans to ever do so.” –Apple on reports that it’s tracking iPhone and 3G iPad users (Fortune) All Things D has the skinny from Apple Senior Vice President Phil Schiller on why the white iPhone 4 took so darned long to hit shelves. (All Things D) A group of unnamed Facebook investors want to sell off $1 billion worth of shares on the secondary market, valuing the social networking champ at $70 billion. Any takers? (Reuters) Why the social graph and credits will quickly become Facebook’s most potent “Deals” weapons. (GigaOm) Social bookmarking site Delicious, acquired by Yahoo in 2005, was sold off to YouTube founders Chad Hurley and Steve Chen, who plan to integrate it into a new, enigmatic start-up called Avos. (VentureBeat) About that PlayStation Network breach, there’s good news and bad news for the 77 million or so affected users. First, the good: Your credit card data was apparently safe thanks to encryption. The bad: Pretty much everything else — user names, passwords, birth dates, and home address — wasn’t. That’s probably why one user has already filed a lawsuit against Sony. (The Register and CNET) Jack Dorsey’s mobile payment start-up Square keeps making headlines… A week after news spread that its credit card readers would be sold via Apple online and brick and mortar locations, Visa reportedly made an unspecified “strategic investment” in the company. (TechCrunch) Why the iPod won and TiVO lost. (Fortune) Social enterprise network start-up Magnet Systems raised $12.6 million during its first round of institutional funding led by venture capital firm Andreessen Horowitz. (VentureBeat) In yet another acquisition, Zynga bought up UK-based mobile game developer and GodFinger maker Wonderland Software for an unspecified amount. Don’t miss the latest tech news. Sign up now to get Today in Tech emailed to you each and every morning.